package cn.tedu._04weibo.base.filter;

import cn.tedu._04weibo.pojo.vo.UserSelectQuery;
import lombok.extern.slf4j.Slf4j;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@Slf4j
@WebFilter(filterName = "LoginCheckFilter",urlPatterns = {"/v1/weibo/*","/v1/comment/*"})
public class LoginCheckFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        log.debug("初始化");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        //类型的强转
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        HttpSession session = request.getSession();
        UserSelectQuery query=(UserSelectQuery)session.getAttribute("user");
        if (query!=null){
            filterChain.doFilter(request,response);
        }else {
            response.sendRedirect("login.html");
        }
    }

    @Override
    public void destroy() {
        Filter.super.destroy();
    }
}
